878159945 has 8 divisors (see below), whose sum is σ = 1134852936. Its totient is φ = 648487296.

The previous prime is 878159921. The next prime is 878159963. The reversal of 878159945 is 549951878.

It can be written as a sum of positive squares in 4 ways, for example, as 183521209 + 694638736 = 13547^2 + 26356^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 878159945 - 2¹⁶ = 878094409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6755012 + ... + 6755141.

It is an arithmetic number, because the mean of its divisors is an integer number (141856617).

Almost surely, 2^878159945 is an apocalyptic number.

It is an amenable number.

878159945 is a deficient number, since it is larger than the sum of its proper divisors (256692991).

878159945 is a wasteful number, since it uses less digits than its factorization.

878159945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13510171.

The product of its digits is 3628800, while the sum is 56.

The square root of 878159945 is about 29633.7635983012. The cubic root of 878159945 is about 957.6155904873.

The spelling of 878159945 in words is "eight hundred seventy-eight million, one hundred fifty-nine thousand, nine hundred forty-five".